Metal screen



FIG. 1 is an isometric view of a metal screen;

FIG. 2 is a front view of the metal screen;

FIG. 3 is a back view of the metal screen;

FIG. 4 is a left side view of the metal screen;

FIG. 5 is a right side view of the metal screen;

FIG. 6 is a top view of the metal screen; and,

FIG. 7 is a bottom view of the metal screen. 

CLAIM What is claimed is the ornamental design for a metal screen, as shown and described. 